Detections
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Echo: flex: security update to 2.6.4-8.2+b4

medium Tenable Cloud Security Plugin ID 462960

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack
 exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in
 certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to
 cause a denial-of-service. (CVE-2019-6293)

Solution

Update the flex library and its related packages to version 2.6.4-8.2+b4 or later.

See Also

https://advisory.echohq.com/cve/CVE-2019-6293

Plugin Details

Severity: Medium

ID: 462960

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2019-6293

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/1/2026

Vulnerability Publication Date: 1/15/2019

Reference Information

CVE: CVE-2019-6293